How do forensic scientists ID people from their teeth?
DNA can also be extracted from teeth, due to their position in the jaw providing protection.
[Teeth as a source of DNA for forensic identification of human remains](https://www.sciencedirect.com/science/article/pii/S1355030613000579)
There has to already be an idea of who the dead person might be, then they go to that persons dentist and ask for a copy of the records. They then match the fillings, moldings, or xrays to the jaw and teeth. They look for any similarities or dissimilarities.